EVALUATION OF GAP-GRADED ASPHALT CONCRETE MIXTURES

GAP-GRADED AGGREGATES HAVE DRAWN INCREASING ATTENTION BECAUSE OF THE GROWING DEMAND FOR HIGH-QUALITY AND MORE DURABLE PAVING MIXTURE FOR MODERN TRAFFIC, AND BECAUSE OF THE RISING COSTS FOR PRODUCING MAXIMUM DENSITY OR WELL- GRADED AGGREGATES, ESPECIALLY NEAR URBAN AREAS. EXPERIMENTAL RESULTS ARE REPORTED ON A COMPARATIVE STUDY INVOLVING 3 FULLER'S CURVE GRADINGS, 8 GAP GRADINGS, 2 AGGREGATES, AND 90 MIXTURES WITH VARYING ASPHALT CONTENTS. THE PHYSICAL PROPERTIES OF THE MIXTURES WERE EVALUATED IN TERMS OF BOTH MARSHALL DESIGN AND HVEEM DESIGN METHODS. RESULTS HAVE SHOWN THAT GAP-GRADED AGGREGATES CAN PRODUCE MIXTURES WITH PHYSICAL PROPERTIES EQUAL TO OR BETTER THAN CONTINUOUSLY GRADED AGGREGATES AT USUALLY HIGHER OPTIMUM ASPHALT CONTENTS.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1971/361/361-006.pdf
• Supplemental Notes:
  • Sponsored by Committee on Mechanical Properties of Bituminous Pavement Mixtures and presented at the 50th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Lee, Dah-Yinn
  • Dutt, Rathindra N
• Conference:
  • 50th Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1971-1-18 to 1971-1-22
• Publication Date: 1971

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 47-57
• Monograph Title: Asphaltic concrete pavements and constituent materials
• Serial:
  • Highway Research Record
  • Issue Number: 361
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregate mixtures; Asphalt content; Bituminous aggregates; Costs; Gap grading; Physical properties
• Subject Areas: Finance; Highways; Materials;

Filing Info

• Accession Number: 00211709
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 17 1972 12:00AM